Here's my sessionInfo on one machine.
sessionInfo()
R version 2.15.0 (2012-03-30)
Platform: x86_64-pc-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8
FWIW, I cannot reproduce the error either (using the appropriate mods to
the originally posted code) ...
Matt
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Dear Brian, Michael and Db.
Thanks for all your suggests.
I tried all your hints. But i found the problem remains, and still shows
order.by requires an appropriate time-based object
it sounds strange.
Best,
Haiping
On 23 April 2012 23:08, Brian G. Peterson br...@braverock.com wrote:
On
On Sat, 2012-04-28 at 16:14 +0800, Haiping LAN wrote:
Dear Brian, Michael and Db.
Thanks for all your suggests.
I tried all your hints. But i found the problem remains, and still shows
order.by requires an appropriate time-based object
it sounds strange.
If you are going to persist in
Your Cl(GSPC) returns a Close and AdjClose , just choose one:
Clx=Cl(GSPC)
Cly=Clx[,1]
ex.model - specifyModel(T.ind(GSPC) ~ Delt(Cly,k=1:3))
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In addition to what's been said, you could much more easily write:
GSPC - getSymbols(^GSPC, from = 2000-01-01, auto.assign = F)
which will give names that are (directly) compatible with other
quantmod functions and would seem to avoid your problem in the first
place.
Michael
On Mon, Apr 23,
On Mon, 2012-04-23 at 11:03 -0400, R. Michael Weylandt wrote:
In addition to what's been said, you could much more easily write:
GSPC - getSymbols(^GSPC, from = 2000-01-01, auto.assign = F)
I'll make it simpler still...
getSymbols(^GSPC, from = 2000-01-01)
which will create object 'GSPC'
